Snap Lid, Hinge or Film Seal: Choosing the Closure
Decision table
| Closure | Leak resistance | Re-closable | Customer equipment | Cost index |
|---|---|---|---|---|
| Flat snap lid | low | yes | none | 100 |
| Deep snap lid | medium | yes | none | 115 |
| Gasket snap lid | high | yes | none | 135 |
| Hinged (living hinge) | low–medium | yes | none | 105 |
| Film seal | highest | no | sealer | 90 |
| Heat-seal + snap | highest | yes | sealer | 140 |
Ask this before quoting
"Does your packing line have a tray sealer?"
If yes, film seal is the cheapest and tightest option. If no, you must supply a snap lid, and the leak conversation changes entirely. Many quote disputes come from a supplier quoting film seal to a buyer who fills by hand.
Lid fit tolerances
| Parameter | Target |
|---|---|
| Rim interference | 0.15–0.30 mm |
| Lid skirt engagement | ≥3 mm |
| Rim flatness | ±0.3 mm |
| Lid pull-off force | 15–35 N |
Below 15 N the lid pops in transit; above 35 N staff cannot open it without a tool, and they complain.
FAQ
Are gasket lids worth the cost? For saucy food in delivery, yes. For dry bakery, no.
Can I switch lid type later? Only if the container rim is unchanged. A rim change means a new mould.
Next step
Tell us how the customer fills and packs. We will recommend one closure and explain the trade-off rather than quoting all six.
Related reading
- Round vs Square PP Container: Which Loads Better
- Sauce Cup Sealing: Foil Film vs Heat Seal vs Plastic Lid
- Custom Colour and Pantone Matching for PP Containers
Models covered on this site: 600 ml PF-Z600 · 950 ml PF-GG950 · 470 ml PF-520 · see all models in this category.
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